Western Australia, Potassium, Fertilizers, Subterranean clover
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There are a number of areas in the south-western portion of the State where, although adequate quantities of superphosphate and trace elements have been applied, the growth of pasture species, particularly subterranean clover, has declined. In some cases, subterranean clover has disappeared completely. Investigations have shown that in many instances the decreased production is due to potassium deficiency.
Fitzpatrick, E. N. and Dunne, T. C.
"Potassium for Subterranean clover,"
Journal of the Department of Agriculture, Western Australia, Series 3: Vol. 5
, Article 12.
Available at: https://researchlibrary.agric.wa.gov.au/journal_agriculture3/vol5/iss3/12